# Power control for parallel-installed MultiPlus 2 inverters

**URL:** <https://community.victronenergy.com/t/parallel-geplaatste-multiplus-2-inverter-vermogen-regelen/56223>\
**Category:** DIY\
**Tags:** node-red, parallel, cerbo\_gx\
**Created:** [8 April 2026 17:56 UTC](https://community.victronenergy.com/t/parallel-geplaatste-multiplus-2-inverter-vermogen-regelen/56223 "2026-04-08T17:56:56Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Camelroel](https://avatars.discourse-cdn.com/v4/letter/c/a8b319/32.png) [@Camelroel](https://community.victronenergy.com/u/Camelroel)\
**Post date:** [8 April 2026 17:56 UTC](https://community.victronenergy.com/t/parallel-geplaatste-multiplus-2-inverter-vermogen-regelen/56223/1 "2026-04-08T17:56:56Z")

</div>

I have a MultiPlus 2 6k5 and a 32 kWh battery. Since, like many people, I don’t have unlimited time, I initially connected the system in parallel to the PV circuit. This gives me a 25 A limit to the consumer unit.

I’m going to run two 10 mm^2 cables under the house to convert the system to a series installation with a backup power function.

But of course I want to get the system up and running as quickly as possible, hence the initial parallel option.

Situation: the MultiPlus is connected only to AC-in, and the PV system is also connected there. I have a Cerbo and an EM24 that measures the PV output.

My problem: the cable is protected by a 25 A fuse. In theory, the PV installation could deliver 5,000 W, but it doesn’t often exceed 4,000 W. I have limited the inverter power to 2,000 W. Yes, I know, technically that is slightly too much.

I’m now trying to create a control system with Node-RED. Put simply: 5,000 W - PV output = maximum inverter power. I managed to get this working with the help of ChatGPT, but now there’s one final step: which node can I use to send this to the MultiPlus? ChatGPT doesn’t know either and wants to control it via a workaround.

Do you have any good ideas?

Many thanks in advance.

Roel

---

<div class="post-metadata">

**Author:** ![fredvduin](https://avatars.discourse-cdn.com/v4/letter/f/ed655f/32.png) [@fredvduin](https://community.victronenergy.com/u/fredvduin)\
**Post date:** [9 April 2026 13:12 UTC](https://community.victronenergy.com/t/parallel-geplaatste-multiplus-2-inverter-vermogen-regelen/56223/2 "2026-04-09T13:12:08Z")

</div>

Ik neem aan dat je de Node Red van de GX gebruikt

Test met 2250

![image](https://europe1.discourse-cdn.com/victron/original/3X/c/a/ca0701018b0747c55c04da49067eb791d6173ce3.png)

ESS node

 ![image](https://europe1.discourse-cdn.com/victron/original/3X/8/d/8dc0d953226b92287bcbb83720c674344bda1165.png)

 ![image](https://europe1.discourse-cdn.com/victron/original/3X/e/0/e08016337de2e720a8e73bdecabe8360ed5a35ed.png)

---

<div class="post-metadata">

**Author:** ![Camelroel](https://avatars.discourse-cdn.com/v4/letter/c/a8b319/32.png) [@Camelroel](https://community.victronenergy.com/u/Camelroel)\
**Post date:** [9 April 2026 14:13 UTC](https://community.victronenergy.com/t/parallel-geplaatste-multiplus-2-inverter-vermogen-regelen/56223/3 "2026-04-09T14:13:40Z")

</div>

Thanks, I wouldn’t have looked for it there.

Apparently, people do know more than ChatGPT after all. 😄